a, abbr, acronym, address, applet, article, aside, audio, b, big, blockquote, body, canvas, caption, center, cite, code, dd, del, details, dfn, div, dl, dt, em, embed, fieldset, figcaption, figure, footer, form, h1, h2, h3, h4, h5, h6, header, html, i, iframe, img, input, ins, kbd, label, legend, li, mark, menu, nav, object, ol, output, p, pre, q, ruby, s, samp, section, small, span, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, time, tr, tt, u, ul, var, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font-weight: 400;
  vertical-align: baseline
}

article, aside, details, figcaption, figure, footer, header, menu, nav, section {
  display: block
}

body {
  line-height: 1
}

blockquote, q {
  quotes: none
}

blockquote:after, blockquote:before, q:after, q:before {
  content: none
}

table {
  border-collapse: collapse;
  border-spacing: 0
}

a {
  color: #7e8c8d;
  -webkit-backface-visibility: hidden;
  text-decoration: none
}

li {
  list-style: none
}

body {
  -webkit-text-size-adjust: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0)
}

// 所用css
.preDog{
  position: absolute;
  background-image: url("../img/pre_dog.png");
  background-size: 100%;
  left: 50%;
  margin: auto;
  margin-left: -30px;
  top:50%;
  margin-top: -100px;
  img{
    display: block;
  }
}
body{
  background: #CD0014;
}